Campbell SnowVUE 10 Product Manual
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Campbell SnowVUE 10 Product Manual

Digital snow depth sensor
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10/2021
Copyright © 2021
Campbell Scientific, Inc.

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Summary of Contents for Campbell SnowVUE 10

  • Page 1 10/2021 Copyright © 2021 Campbell Scientific, Inc.

  • Page 2: Table Of Contents

    Table of contents 1. Introduction 2. Precautions 3. Initial inspection 4. QuickStart 5. Overview 6. Specifications 7. Installation 7.1 Wiring 7.2 Programming 7.2.1 CRBasic programming 7.3 Beam angle 7.4 Mounting height 7.4.1 Reference point 7.5 Mounting 8. Operation 8.1 Quality numbers 8.2 Pitch, roll, and tilt axis 8.3 Temperature compensation 8.4 SDI-12 measurements...

  • Page 3: Introduction

    Short Cut is available as a download on www.campbellsci.com . It is included in installations of LoggerNet, RTDAQ, and PC400. 1. Open Short Cut and click Create New Program. 2. Double-click the data logger model. SnowVUE 10 Sonic Ranging Sensor...
  • Page 4 Temperature folder. Double click the 109 Temperature Probe. Use the default of Deg C. 4. Click the Wiring tab to see how the sensor is to be wired to the data logger. Click OK after wiring the sensor. SnowVUE 10 Sonic Ranging Sensor...
  • Page 5 5. In the Available Sensors and Devices box, type SnowVUE 10. You can also find the sensor in the Sensors > Miscellaneous Sensors folder. Double-click the SnowVUE10 Digital Snow Depth Sensor. Type the Distance to base, which is the distance from the wire mesh face to the ground;...
  • Page 6 7. Repeat steps five and six for other sensors. Click Next. 8. In Output Setup, type the scan rate, meaningful table names, and Data Output Storage Interval. Click Next. For this sensor, Campbell Scientific recommends measurement scans of 15 seconds or more.

  • Page 7: Overview

    5. Overview The SnowVUE 10 measures the distance from the sensor to a target. It determines the distance to a target by sending ultrasonic pulses (50 kHz) and listening for the returning echoes that are reflected from the target. The time from pulse transmission to return of the echo is the basis for obtaining the distance measurement.

  • Page 8: Specifications

    Uses a multiple echo processing algorithm to help ensure measurement reliability Can output a data value indicative of measurement quality (Quality numbers (p. 14)) Compatible with Campbell Scientific CRBasic data loggers: GRANITE series, CR6, CR1000X, CR800 series, CR300 series, CR3000, and CR1000 6. Specifications Power requirements: 9 to 18 VDC Quiescent current consumption: <...

  • Page 9: Installation

    If you are programming your data logger with Short Cut, skip Wiring (p. 7) and Programming 8). Short Cut does this work for you. See QuickStart (p. 1) for a Short Cut tutorial. 7.1 Wiring The following table provides wiring information for the SnowVUE 10. SnowVUE 10 Sonic Ranging Sensor...

  • Page 10: Programming

    For the GRANITE-series, CR6, and CR1000X data loggers, triggering conflicts may occur when a companion terminal is used for a triggering instruction such as TimerInput(), PulseCount(), or WaitDigTrig(). For example, if the SnowVUE 10 is connected to C3 on a CR1000X, C4 cannot be used in the TimerInput(), PulseCount(), or WaitDigTrig() instructions.

  • Page 11: Crbasic Programming

    7.3 Beam angle When mounting the SnowVUE 10, the beam angle needs to be considered. Mount the SnowVUE 10 perpendicular to the intended target surface. The SnowVUE 10 has a beam angle of approximately 30 degrees. This means that objects outside this 30-degree beam will not be detected nor interfere with the intended target.

  • Page 12: Mounting Height

    7.4 Mounting height Mount the SnowVUE 10 so that the face of the transducer is at least 70 cm (27.5 in) away from the target. However, mounting the sensor too far from the target can increase the absolute error. For example, if your sensor is measuring snow depth in an area that will likely not exceed 1.25 m (4.1...

  • Page 13: Mounting

    FIGURE 7-2. Distance from edge of transducer housing to grill 7.5 Mounting To achieve an unobstructed view for the beam, the SnowVUE 10 is typically mounted to a tripod mast, tower leg, or user-supplied pole, using the CM206 6-ft crossarm or a pipe with a 1-inch to 1.75-inch outer diameter.
  • Page 14 FIGURE 7-3. Crossarm installation using the SnowVUE 10 mounting kit FIGURE 7-4. SnowVUE 10 mounting stem SnowVUE 10 Sonic Ranging Sensor...

  • Page 15: Operation

    The SnowVUE 10 may reject readings from a moving target. If the SnowVUE 10 rejects a reading or does not detect a target, zero will be output for the distance to target and zero will be output for the quality number.

  • Page 16: Quality Numbers

    8.2 Pitch, roll, and tilt axis The SnowVUE 10 reports pitch and roll to ensure that the sensor is mounted perpendicular to the intended target surface. The front of the sensor is the face with the vent on it (opposite the connector).

  • Page 17: Temperature Compensation

    109. The temperature sensor needs to be housed in a radiation shield. Temperature compensation is applied to the SnowVUE 10 output using the following formula: SnowVUE 10 Sonic Ranging Sensor...

  • Page 18: Sdi-12 Measurements

    The SnowVUE 10 needs to be powered for 1.5 s before it can receive an SDI-12 command. The different commands are entered as options in the SDI-12 recorder instruction. If the SnowVUE 10 is unable to detect a proper echo for a measurement, the sensor will return a zero value for the distance to target value.
  • Page 19 SDI-12 address Change address command; b is aAb! the new address Set the distance to ground aXWM+D.DD! parameter in the SnowVUE 10. The Extended command distance must be no more than four decimal places. Set reference temperature. The aXWT+CC.C! temperature must be in degrees °...
  • Page 20 Rather, the data logger picks up the data with the D! command on the next pass through the program. Another measurement request is then sent so that data is ready on the next scan. SnowVUE 10 Sonic Ranging Sensor...

  • Page 21: Maintenance And Troubleshooting

    Replace the transducer assembly every three years if it is not in a humid environment. Replace the transducer housing assembly every year in humid environments. 9.1 Disassembly/assembly procedures The following figures show the procedure for disassembling the SnowVUE 10. Disassembly is required to change the transducer. CAUTION: Before proceeding with any maintenance, always retrieve the data first.
  • Page 22 1. Disconnect cable from sensor. 2. Remove six screws from the transducer housing. FIGURE 9-1. Transducer screws 3. Remove transducer housing and disconnect wires. FIGURE 9-2. Disassembled SnowVUE 10 4. Carefully reassemble in reverse order. SnowVUE 10 Sonic Ranging Sensor...

  • Page 23: Data Interpretation

    Table 9-1 (p. 21) shows a station that reads the SnowVUE 10 every 5 seconds for 1 minute and takes the median value from the readings. Table 9-1: Data filtering example...
  • Page 24 Consecutive snow-depth values Values sorted from low to high 0.10 (high error value) 0.36 0.33 0.37 0.32 The best course of action would be to ignore the five lowest values and take the sixth value (0.33). SnowVUE 10 Sonic Ranging Sensor...

  • Page 25: Appendix A. Importing Short Cut Code Into Crbasic Editor

    Block. This adds an apostrophe (') to the beginning of each of the highlighted lines, which instructs the data logger compiler to ignore those lines when compiling. The Comment Block feature is demonstrated at about 5:10 in the CRBasic | Features video SnowVUE 10 Sonic Ranging Sensor...
  • Page 26 See Product Details on the Ordering Information pages at www.campbellsci.com . Other manufacturer's products, that are resold by Campbell Scientific, are warranted only to the limits extended by the original manufacturer. Refer to www.campbellsci.com/terms#warranty for more information.
  • Page 27 To obtain a Returned Materials Authorization or Repair Reference number, contact your CAMPBELL SCIENTIFIC regional office. Please write the issued number clearly on the outside of the shipping container and ship as directed. For all returns, the customer must provide a “Statement of Product Cleanliness and Decontamination”...
  • Page 28 Do not recharge, disassemble, heat above 100 °C (212 °F), solder directly to the cell, incinerate, or expose contents to water. Dispose of spent batteries properly. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR...
  • Page 29 Campbell Scientific Regional Offices Australia France Thailand Location: Garbutt, QLD Australia Location: Vincennes, France Location: Bangkok, Thailand Phone: 61.7.4401.7700 Phone: 0033.0.1.56.45.15.20 Phone: 66.2.719.3399 Email: info@campbellsci.com.au Email: info@campbellsci.fr Email: info@campbellsci.asia Website: www.campbellsci.com.au Website: www.campbellsci.fr Website: www.campbellsci.asia Brazil Germany Location: São Paulo, SP Brazil...

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